What is Caballeria?

Legal Definition
Spanish law. A measure of land, which is different in different provinces. Diccionario por la Real Academia. In those parts of the United States, which formerly belonged to Spain, the caballeria is a lot of one hundred feet front and two hundred feet deep, and equal, in all respects, to five peonias. (q. v.) 2 White's Coll. 49; 12 Pet. 444. note. See Fanegas.
-- Bouviers Law Dictionary
Legal Definition
In Spanish law. An allotment of land acquired by conquest, to a horse soldier. It was a strip one hundred feet wide by two hundred feet deep. The term has been sometimes used in those parts of the United States which were derived from Spain. See 12 Pet 444, note. I
-- Black's Law Dictionary
Legal Definition
(Spanish) A lot of land measuring 100 by 200 feet.
-- Ballentine's Law Dictionary